Chasing Rails

At the risk of adding to the echo chamber, I’d like to point out the
React Framework for
Zope, a Zope 2.x
product which attempts to ease web development by “stealing ideas from
Ruby on Rails”. OK, so this looks cool.
But I can’t help wondering why Rails has become the gold standard that
web application frameworks aspire towards? Between React,
Subway and
CherryPy (which Subway uses), there seems to be
quite a bit of interest in coming up with either “Python on Rails” or a
“Rails Killer”. Is Rails really that good? I admit it looks cool, but I
haven’t actually used it. Can someone help me out on this?